León. There, torrential rainfall triggered a flood even exceeding 100-year flood values. According to meteorologists in Mexico, the storm dropped of rain over a 40‑hour span. Further rains fell for the following 32 hours, worsening the situation. Adobe homes that survived the initial onslaught collapsed in these rains, killing many people. The rising Santa Catarina River flowed into the San Juan River, causing an abrupt rise and subsequent overflow of water that caught residents off-guard. Multiple small communities were swept away in the ensuing floods. According to Mexican officials, overnight on August 27, the reservoir dam near Nuevo León's capital city, Monterrey, burst, flooding more than half of the buildings in the city, as well as all of the nearby town of San Luisto. The normally wide river swelled to wide. Steel works and smelters situated along the Santa Catarina River were destroyed after the river rose well over its banks. Hundreds of homes were destroyed throughout the city, leaving an estimated 20,000 people homeless. According to the American Society of Civil Engineers, an enormous 235,000 ft3 (6,650 m3) of water was being moved per second during the height of the flood. The raging rivers finally subsided by August 30. At the height of the floods, residents were forced to seek refuge on the roofs of two-story buildings; however, the Santa Catarina River was flowing at a very fast pace of . The force of the current led to most homes being taken off their foundations and sent downstream, resulting in the deaths of anyone inside. In one incident, 90 people died after seeking refuge in a school after their homes collapsed. However, not long after entering the building, flood waters inundated the structure and caused it to collapse. By the morning, survivors reported that the state of the city was "indescribable". The San Francisco church, built in 1572, was destroyed during the storm. Damage from the hurricane was estimated to have been at least $50 million (1909 USD; $ USD). Of this, roughly $20 million was attributed to railroad losses. Throughout Mexico, reports indicated that about 4,000 people were killed as a result of the storm, making it one of the deadliest Atlantic hurricanes on record. Some estimates place the death toll as high as 5,000 and others as low as 3,000. Of these fatalities, 800 are believed to have been in the south side of Monterrey where four